Perhaps you should try some spelling variations:
nhanh dong » hanh dong, nhanh chong, anh dong
doi chieu » doc hieu, ho chieu, mot chieu
trong dan » trong dang, trong san, trong tan
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - nhanh dong ((cua dung) OR (qua dung)) trong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doi chi)) sach - nhanh dong ((cua dung) OR (qua dung)) trong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - nhanh dong ((cua dung) OR (qua dung)) trong dan toan cao*.